Tuberous Begonias are known for their vibrant coloured blooms. They will add flair to the front of a border or provide a magnificent display in pots. Tubers sprout in Spring and will continue to flower until Autumn. In areas of frost, start the tubers indoors, transplanting in the garden after the danger of frost has passed. Also in areas of frost, lift the tubers in Autumn and store in a cool dry place over Winter.